オプションを使用してプロのようにnullを処理します

Optional<String> optional = Optional.of("Chaitanya");
Optional<String> opNullable = Optional.ofNullable("Chaitanya");

Optional<String> optional = Optional.of("Chaitanya");
System.out.println(optional.get());

Optional<String> nameOptional = getFirstName();
if(nameOptional.isPresent()) {
  System.out.println(nameOptional.get());
} else {
  System.out.println("No Name :( ");
}

nameOptional.ifPresent(value -> {
  System.out.println(value);
});

nameOptional.ifPresent(System.out::println);

try {
  return Optional.ofNullable(getEmpName());
} catch (Exception ex) {
 return Optional.empty();
}

Optional<String> nameInUpperCaseOptional =                            
                       Optional.ofNullable(getEmpName())
                          .map(String::toUpperCase)
                          .get();

String nameInUpperCase = Optional.ofNullable(getEmpName())
                          .flatMap(String::toUpperCase);

String EMPTY = "";
String name = Optional.ofNullable(getEmpName())
                  .orElse(EMPTY);

String name = Optional.ofNullable(getEmpName())
                  .orElseGet(_ -> System.out.println("There is no Value :( "));

String name = Optional.ofNullable(getEmpName())
                  .orElseThrow(Exception::new);